Door-knob.



G. B. PICKUP.

DOOR KNOB. APPLICATION FILED JULY 15, 1908.

Patented July 6, 1909.

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UNITED STATES PATENT OFFICE.

GEORGE B. PIOKOP, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO I. & F.CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

DOOR-KNOB.

To all whom it may concern:

Be it known that I, GEORGE B. PIcKoP, a citizen of the United States,residing at New Britain, county of Hartford, Connecticut, have inventedcertain new and useful Imrovements in Door-Knobs, of which the folowingis a full, clear, and exact description.

My invention relates to improvements in door knobs, and is particularlyconcerned with the means for securing the knobs to the c 001'.

The object of the invention is to provide a construction whereby theknobs may be secured in operative position without the necessity ofusing any implement or tool, the construction being such that the knobsmay be secured entirely by manual operation.

\Vith these and other objects in view, the invention consists in theconstruction and arrangement of parts which is illustrated in theaccompanying drawings, in which Figure 1 is a sectional view through theknobs,.taken longitudinally of the spindle. Fig. 2 is a detail sideview, partly in section, of an outside sleeve employed in my invention.Fig. 3 is an end view of the same. Fig. 4 is a side view, partly insection, of a driver sleeve comprising a part of the invention. Fig. 5is an end view of the part shown in Fig. 4. Fig. 6 is a side view of aknob involving the invention.

In the embodiment of my invention which is herein selected forillustration, the device consists of the opposite knobs 1 and 2 mountedupon the ends of the knob spindle 3.

4 and 5 each represent a rose, which is attached in the usual manner tothe door. The knob 1 and rose 4 are and may be of usual construction,wherein the knob is permanently secured to the spindle by means of arivet concealed by the shank of the rose.

The opposite knob and means for securing the same to the spindleinvolving my invention, comprise the rose 5, having a socket 6, withinwhich is seated the driver sleeve 7, between which and the outsidesleeve 8, which is slidably mounted within the socket 6 of the rose, isinterposed the spring 9, by which the outside sleeve 8 may be extendedin the rose 5, for the urpose hereinafter described. FormanuaFrepression of the outside sleeve within the rose and against thespring 9, the outer end of said sleeve is provided with what may betermed a manual ring 10, which, as evident from an inspec- Specificationof Letters Patent.

Application filed July 15, 1908.

Patented July 6, 1909.

Serial No. 443,534.

tion of Fig. 1, will be within easy and convenient reach of theoperator. While I have here shown and described this manually operablepart as a ring, it is obvious that the same may be in the form of amanually operable lug or finger piece, it being understood that myinvention contemplates any purely manually operable part by which theoutside sleeve may be repressed within the rose in the attachment of theknob without the use of tools of any description. The driver sleeve 7 isprovided with an angular bore 7", which slidably fits and is adapted forthe operation of the knob spindle. The outer surface of the shank ofsaid driver sleeve is also angular in cross section, and takes within acorresponding angular bore 8 in the inner end of the outside sleeve. Itwill be noticed from an inspection of Fig. 1, that when the parts are inassembled position, the shank of the driver sleeve projects about halfway through the angular bore of said outside sleeve.

The shank of knob 2, which is here'designated as the screwless knob, isprovided with an angular portion 2 at its inner end, which correspondsto the angular bore 8" within the inner end of the outside sleeve 8, theremainder of the knob shank 2 being cylindrical to seat within thecylindrical bore 8 at the outer end of the outside sleeve. The shank ofthe knob is provided with an internally screw-threaded bore 11 to engagethe correspondingly screw-threaded end of the knob spindle.

In the assembling and operation of the parts above described, the driversleeve 7 and outside sleeve 8 are first positioned within socket 6 ofrose 5, with the spring 9 interposed between them, as shown m Fig. 1. Itis to be understood in this connection that the parts supplied to thetrade will have the driver sleeve, outside sleeve and spring preferablypermanently assembled so that the only operation necessary for thecarpenter or user will be the attachment of the knob alone.

With the parts assembled as just described, and in order to attach theknob, the outside sleeve is pushed back or retracted by hand within therose by means of its manual ring 10 until the outer end of the angularbore 8 of the sleeve is flush with the outer end of the driver sleeve.The knob is then screwed in upon its spindle until there is no end playapparent between the knobs on opposite sides of the door. The outsidesleeve is then released and springs back into normal position with themanual ring 10, covering the connection between the knob and the shankof the rose. At the same time, the angular bore at the inner end of theoutside sleeve will interlock the angular ends of both the driver sleeveand knob shank, thereby coupling the driver sleeve and knob so that theywill then move as one part and rotate the knob to operate the latch orbolt, but it will be seen that there is no direct operative engagementof the knob shank with the driver sleeve.

The manual ring 10 is made of sufficient depth to at all times cover thegap between the end of the rose and the head of the knob, an annularrecess 1O between the ring and outside sleeve permitting the endwisemove ment oi the ring over the shank of the rose.

What I claim is:

1. In a device of the character described, a knob spindle, a sleeveslidably but non-rotatably mounted thereon and having an externallyangular shank, a knob adapted to be screwed upon said spindle and alsohaving an externally angular shank, and a slidable coupling memberhaving a bore adapted to surround and engage said angular shanks of thesleeve and knob to hold the knob against rotation on said spindle.

2. In a device of the character described, a knob spindle, a memberslidably but non-rotatably mounted thereon, a knob adapted to be screweddown upon said spindle to abut said member, and a coupling memberconstructed to engage the abutting ends of said first member and knob toprevent rotation of the latter upon said spindle.

3. In a device of the character described, a knob spindle, a sleeveslidably but non-rotatably mounted thereon, a knob having a shoulderedshank with an angular end and adapted to be screwed upon said spindleuntil its inner end abuts said sleeve, and a spring-actuated couplingsleeve slidably mounted upon the first sleeve and adapted to berepressed thereover to permit positioning for said first member and knobmounted upon said first member and adapted to be actuated by its springto couple said first member and knob, said coupling member having a ringextending beyond the rose to cover the junction between said rose andknob when the knob is in operative position.

5. In a device of the character described, a rose, a knob spindle, amember slidably but non-rotatably mounted thereon, a knob having a shankto be screwed upon said spindle to enter said rose so as to abut saidmember therein, and a coupling slid able but non-rotatable on saidmember, said coupling being arranged to non-rotatably engage anddisengage the inner end of said shank, and means to hold said couplingmember at all times in non rotatable engagement with said first memberand normally in non-rotatable engagement with said knob shank to preventrotation of the latter on said spindle.

6. In a device of the character described, a knob spindle, a socketedrose surrounding said spindle, a knob adapted to be screwed upon saidspindle, and securing means for said knob slidably mounted within saidrose and including a manually operable exposed ring extending beyondsaid rose for actuation of the securing means to securing and releasingpositions and extending forward over the outer end of the rose to coverthe junction between the rose and knob at all times after the parts areassembled.

GEORGE B. PIOKOP.

Witnesses R. C. POWELL, (has. A PEARD.

